Is it possible to connect multiple chart in production editor

I want to draw a large diagram using production editor but I don’t want to congest in a single diagram, I would like to draw each segment separately so that I need to create a link between those segment, Is that possible with production Editor.

Ex:- I am having a plan with 3 zones, I would like to show only three icons while clicking any of those icons my graph has to re-render with particular zone plan.

Maybe. Could you please show a sequence of small screenshots demonstrating what you want?

Is it possible to implement regrouping concept in production editor
https://gojs.net/latest/samples/regrouping.html
It is very helpful to manage larger diagrams and clubbing some elements in to a single group.

If possible kindly help with some example code

Yes, you can support nested groups and dynamic regrouping in your app. That Regrouping sample demonstrates one way you could – the code is all there on that page.